The ornamental design for a ceiling-mounted monitor, as shown and described.

Description

FIG. 1 is an isometric view showing our new design for a ceiling mounted monitor from the bottom, rear and right side, the monitor's display being shown in a stowed orientation and the ceiling being indicated by dashed lines as environment;

FIG. 2 is an isometric view showing the design from the bottom, front and left side and with the display shown in a deployed orientation;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a left-side view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an isometric view showing a second embodiment of our design from the bottom, rear and right side, the monitor's display being shown in a stowed orientation with monitor environment in dashed lines;

FIG. 9 is an isometric view showing the second embodiment of the design from the bottom, front and left side and with the display shown in a deployed orientation;

FIG. 10 is a front view thereof;

FIG. 11 is a rear view thereof;

FIG. 12 is a right-side view thereof;

FIG. 13 is a left-side view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines showing the ceiling in FIG. 1 and top outline in FIGS. 8-13 are for illustrative purposes only and form no part of the claimed design.